TM 9--2350--292--20--20621 00--6AUXILIARY POWER UNIT DUCTING REPLACEMENT (HATZ) -- CONTINUED0621 00Installation--ContinuedNOTEThe remaining steps are performed with engine deck accessdoor adjacent to the APU closed (TM 9--2350--292--10).4. Install elbow (27) and new gasket (31) with four screws (29) and four new lockwashers (30).5. Slide two clamps (25) over hose (28) and install hose (28) on elbow (27) and on air cleaner adapter (26).6. Position two clamps (25) to hold hose (28) on elbow (27) and air cleaner adapter (26) and tighten clamps (25).3029282527312625